Improvement in spindle-bolster



'p' i r' I' gimme tstrs gutem. @time GEORGE H. NOBLE, OF LOWELL,MASSACHUSETTS, ASSIGNOR TO HIMSELF 'AND BENJAMIN T. MILLS, OF SAMEPLAGE.

Letters Patent No. 76,937, dated April 21, 1868.

IMPROVEMENT IN SPINDLE-BOLSTER.

TO ALL WHOM IT MAY CONCERN:

Be it known that I, GEORGE H. NOBLE, of Lowell, inthe county ofMiddlesex, and State of Massachusetts, have invented certain new anduseful Improvements in Bolsters for Spinning-Machines, of which thefollowing is a full, clear, and exact description, reference being hadto tlic accompanying drawing making part -of this specification, inwhich- Figure l is a central longitudinal section.

Figure 2, a side elevation as applied to a spindle.

Figure 3, a central longitudinal section considerably enlarged.

Figures 4 and 5 are end elevations of iig. l.

Figure 6 is a central longitudinal section similar to g. 1.

This invention consists in the employment of divided and tapering orconical bushings or linings, which t a tapering hole in the outer shell,d, of the-spindle-bolster, in combination with one or more oil-passages,c, and a. dishing top to rcceive'and convey the lubricating-substanceto'the annular oil-space, b, between the upper and lower portions of thetapering linings, a, of the bolster.

The principal object'of the tapering bushings or linings a is to renderthc removal of old or Worn bushings,

and the replacing of n ew ones, easily and conveniently performed, andwithout removing the holsters from the i rail in which they are set. l

The principal object in dividing the tapering bushings or linings a, isto obtain the oil-space b near the centre, as shown, so that the spindlewill be better lubricated by en absolute pressure of oil from above, and.v

passing through vone or more oil-passages e, made in the substance ofthe bolster, or between the bolster proper andthe lining, as in tig. 6,or downward and inward to the oil-space b and thc spindle, which illsthe central passage or interior ot' the lining above and below theoily-space b.

When the tapering bushings or linings have become so worn as to requirereplacing by new linings, they are easily and conveniently removedwithout injury to the bolsters, and without removing the holsters fromthe rail which holds them.

I nd, by experiment, that thcsc improved spindle-bolsters can be madeconsiderably cheaper than most of the other spindle-holsters now in use,:1nd,by reason of the lubricating-substance being conveyed to thespindle under absolute pressure or force, I have good reason forasserting both the spindle and the bushing or liningv will endure muchlonger than in'any of the ordinary spinning-machine holsters now in use.

What I claim as of my, invention, and desireto secure by Letters Patent,is-

The divided .and tapering or conical bushings or linings, combined witha spindle-bolster, as described, the said bolster being provided withone or more oil-passages c, and a. dishing top, to receive and conveythe lubricating-substance to the oil-space b and the spindle, in themanner and for the purpose specified.

GEORGE H. NOBLE. Witnesses JOHN E. CRANE, LANG MONROE.

